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COVERS in the anime Kill La Kill are Life Fiber entities that are responsible for the dissemination of Life Fibers throughout the world. The name of Revocs Corporation, a company owned by Ragyo Kiryuin, is an anagram of their name. According to Ragyo, the intent of COVERS is to "bind the heavens, the earth and mankind, covering all".

COVERS can roughly be separated into two groups: cloth-form COVERS and human-form COVERS. Cloth-form COVERS appear as white business suits with a red bowtie that need to stay in contact with the Original Life Fiber in order to stay active - usually by one or two Life Fibers that connect them to their source. When a cloth-form COVER absorbs a human being as an energy source, it becomes a human-form COVER that can operate autonomously. In this form, the COVERS gain a more substantial, muscular appearance, with their "bowtie" enlarging into eye-like growths and a necktie-shaped hole appearing in their chests that bears the emaciated face of its absorbee.